Spark-arrester.



O. ANDERSON.

SPARK ARRESTER. APPLIOATION FILED 110v. 15, 191o.

Patented Apr. 23, 1912.

WITNESSES INVENTOR I C) E n d e f s o n UNITED STATES PATEN SPARK-ARRESTER.

Specification of Letters Patent.

Patented Apr. 23, 1912.

Application filed November 15, 1910. Serial No. 592,439.

To all whom it may concern Be it known that I, OSCAR ANDERSON, a citizen of the United'States, residing at East Lake, in the county of Aitkinand 5 State of Minnesota, have invented certain new and useful Improvements in Spark- Arresters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to new and useful improvements in attachments for railroad engines and my object is to provide means whereby jets of water will be introduced into the smoke stack of the engine to prevent live particles of coal from being discharged from the pipe.

A further object is to provide means for spraying the jets of water as they are discharged into the smoke stack.

A further object is to provide a valve whereby the flow of water into the pipe may be regulated or entirely stopped, and, a further object is to provide means for discharging the particles of coal and the water from the smoke stack.

Other objects and advantages will be hereinafter referred to and more particularly pointed out in the specification and claim.

In the accompanying drawings forming a part of this application, Figure 1 is a side elevation of an engine showing my improved device attached thereto, and, Fig. 2 is an enlarged detail sectional view as seen on line 2-2, Fig. 1, Fig. 3 is a vertical sectional view of the device.

Referring to the drawings in which similar reference numerals designate correl sponding parts throughout the several views, 1 indicates an engine such as is used on railways and 2 indicates the smoke stack therefor, through which the smoke is discharged from the engine, said smoke stack being substantially S-shape or composed of two elbow sections in reverse position to each other. Placed between the two sections of the smoke stack, is a vertically extending drum 8, into which the smoke 0 passing through the elbow connected to the engine is first discharged in passing to the open end of the stack.

The prime object of my invention is to prevent live cinders or small particles of 5 coal from being discharged through the smoke stack and onto the ground, whence fires are originated along the railway, and to this end, I provide nozzles 4 preferably arranged in tandem and on opposite sides of the path of the smoke through the stack, said nozzles being attached to a supply pipe 5. The ends of the nozzles projecting through the wall of the drum are provided with spraying devices 6, which scatter the jets of water and thereby cause the water to cover all parts of the interior of the drum. The nozzles or devices 6 point to a common center and the jets projected thereby intermingle, and thus are broken up into fine mist,- whereby the escaping sparks are sprayed.

The pipe sections or nozzles 4 are curved to snugly engage the outer face'of the smoke stack and their inner open ends are flared to form the spraying devices 6, and by means of said flared ends the nozzles are held in snug engagement with the smoke stack without any rivets or other fastening means.

As the cinders and live ashes come in contact with the jets of water, they will be instantly extinguished and a major portion thereof will drop to the lower end of the drum, and in order to prevent an accumulation of the same in the drum, the lower end thereof is tapered and has connected thereto, a discharge pipe 7. By inclining or tapering the wall at the lower end of the drum, the ashes, etc., and water will readily enter the discharge pipe and descend therein.

The supply pipe 5 is preferably extended into the cab of the engine where it is connected to the usual form of water pump (not shown), said pipe having in its length a Valve 8, by means of which, the supply of water to the nozzles may be readily regulated or entirely stopped when desired. By this construction, it will be readily seen that it will be impossible for the live particles of coal or ashes to pass through the drum without being extinguished, thereby avoiding any possibility of fires along the railroad line.

It will further be seen that this device can be attached to the engine at a minimum expense and will not in any way interfere with the operation or draft of the engine.

What I claim is In a spark arrester, the combination with a locomotive smoke stack curved reartoward a common center, the nozzles being 10 positioned in allnement with the confronting ends of the smoke stack, and means for supplying water to said nozzles.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

OSCAR ANDERSON.

Witnesses:

Gno. T. WILLIAMS, FRANK E. SEAVEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

